Driving unit



Aug. 31, 194s..

E. J. KARP DRIVING UNIT Filed July 23, 1942 INVENTOR. Z/'cL/Qrd J i y flV Application-Jueza,1942;seiar l rIfhis 'invention relates At`opp`oumr transmittingmeans; andrh'as to `do wit-h? driving unitsiuseful In machines of t'h'e eharaeter above-referred to,

against. `Mo'respeciileiatlly, I provide .upper` `and i t lower gear"houlsings,V wlththiater housingkrp'- n tatalpipsupported` from the upper. housing and provided with an attachment jeizeivlixigv shaft eccentric' to. its axis of; rotation, this .'shaft. ex?

tending through the 'bottomoflthe-v lower `housing with` `oilseall' means fthereabout; ,being providedfor rotatingjthe slower housing and for` `driving the attachment receiving-ishaft, ,there also being provided,` 1an.' oilpumpfwhich with..

draws o`i1"frorn thellower housingat a= pointabove, "landladjacent the oilsealmeanathus guarding against leakage of oil therethrough, this pump ``di .`se1`1a`.`rging.theoil into the-upperfhousingf `and i the oil `iziwing over and 'about the movingfpart's the latter, thusassuringfnadequate lubrication. Further objects and `advantagef;` of` my `invention Figure 1 :is "a plan ,viewioffa drivingv `bodying my inventiomwith.thejl coverV ofthe upper gearhousing:removed;andi` t "Figure 2 is a: central: vertieal?sectional#A `view parte being shown ini elevations l Whse nhexdrivmg unitaorjmy. inventionfmay closed in myj appending applicationfseriai .No

e drivihgfunitjeomprises gearheus; t `ing and la lfowergear housing 2f totheytopZi" n `the `turner *housing` and thence into;v thelower y, housingandmover and about fthe moving; parts; in

fforivarios purposes butloartieularlysuitahlefor 1 usein mixingfmaehinesemployedinhotels, resa` taurants and? otherA establishments-for mixing `bolted to the upper'fendof epikndlefl, 4this washer f be used for various-purposes', `itfis` particularly suitable for/use withthev mixing mach'ine'vdis' in. plarnlas Qshown morefei'early in "and" |21 andi's restrained again Atheuppgerhousing! and'is restrained Y interior ar@J `shape in collar "ill'geoaxially witha simlarfroller bearli'ngfassenfib'ht lI2 yxnountedgin a flarfiged."leolliar` |73 :extending 4forn fthe bottom of housinglgfifh'e` beariiig vassemblyr 2 is `confined betweenfit'ruge lid fatthe upper edof `collarflfi and atretaining ring |`5 boltedltothe lower endoffcollar. I3; ft'hus re'straimdjafgairis-t1axial.movement l contacting the upperfendeftlh mier ,rapezor `cone of assernbllyfll land`re`straining thefspindle Y n 41 agairilslalfgloWindwardinovement.A `Irifwthatorrianner o the lower housing? issuppoi'ted for rotationfrom `vertical,inOverrlerxiQ relative thereto.

The4 porton,ofhousing opposite to interior flange" 8 svformedto proyide a boxing 2|)Acornf i; prsingafhrizontalitop wall`` or lplatfomi'"2|` and lan inner vertical wall 22 extending frorn the iril` Y* ner edges oftplatforml` to the bottom.r wall of `lhousing |f, .there being a relativelywidetrough orA depression 23 withinhousii'igi-|A at `one side of .boxing`"20,`and a relativelynarrow trough 24 at theother side thereof. Baseplate25*v of a bracketY i i 26.1seatsjupon and is bolted to i, platform 2|.

Bracket 26 is 'provider` a1; eahv sidethereofwith a fiat upwardlyr projecting plate 21., 1 The plates 27|,` arefconnected ,bya web,128`.extnd ing transl-Y versely Aof basel` plate 25VY adjacent the .inner end "thereof, Athis web: being proyided with an upper @inwardly projecting bearinggretainer coliarZS aadalower;bearing retainer `eollar 30@ Antl n `friction bearing assemblies' 3| and 32 of known Y type, Whichlrnay be simila-rto thelnearing asf semblyfl'hare appropriately'mounted in thecol `larsl# arli'dSQWhiCh, `as'lv'vill be undlerstooda,may be provided with interior flanges similar to flange! p roller ,Y bearing f assembly I" of known type is mounted f Yupwardfinoye#` n of this)spindle` v `With thecone of .the lower` bearingassemzbly l2. The upper bearing assembly` |"|V is co'nneglfbe- 110i collar I9 for retaining the bearing assemblies in position.

- VA drive shaft 33, which may berdriven in any suitable Ymannery extends through the top of cover 1 and downward through the bearing assemblies 3l and 32, by means of which rthis shaft is mounted for rotation. An abutment member or collar 34 is suitably secured on shaft 33 at the upper end of bearing assembly `3l and 'cooperates therewith for restraining shafty 3 3'against downward movement. A pinion 35- is secured on shaft 33 at the lower end of bearing assembly 3|, with' which Ait cooperates vfor restraining shaft `33 against upward movement. APinion 35 meshes" with a spur gear 36 secured'on the upper endof a vcountershaft 31 extending downward through spindle 4 into the lower gear housing `2. Shaft lower housing 2. A driven shaft 'H of step formation is r-otatably mounted by Ameans of the bearing assemblies 53 and 69, by which it is restrained against endwise movement in either direction, this shaft being disposed e-ccentrically to countershaft tl'and to spindle 4 about rthe axis of which lower gear housing 2 revolves.

treatment of food stuffs, as explained more fully inl my above identied copending application. 'Since shaft 1| is rotated it isrnecessary that this shaft and itsrassociated bearings and other mov-l ing partsybelubricated, and it is also important that the oil or lubricant does not leak out around 31 is rotatably mounted through a bearing bushn,

ing 38Y mounted in the upper 'end of spindle 4 and conned between 'Washer shoulder `39 of spindle 4. At the llower end of spindle 4 shaftv 31 passes through an oil seal `member l0-,fof known type mounted in a recess zontal lay shaft 48 rotatably mounted, byrmeans 'ofsuitable known bearing assemblies 49 and 5B, in

the lower endsrof angular bracket arms 5| bolted :to and extending downward and inward from the side yplates 21. of bracket 26; A Worm 52 is Ysecured. on lay shaft 43 and meshes with a worm wheel 53 secured onspin'dlei,YV by means of a key 54' and avset screw; 5 5. A spur pinion 56 is keyed onone en d of lay shaft48 vand'is connned between ,I bearing'assemblym and a nut 51 ofknown typel screwingonto shaft 48, there being ra washer 58 mountedy on the lother end of shaft 48 and conf finedV against movementendwise thereof by cap screw`-59 threadingintothe end ofshaft 4d and an associated lockw'ash e'r ,60. The washer 53 andthe pinion 56, in conjunction with'nut 51fand the bearing assemblies, and l50, restrain the lay k shaft V48y against endwise movement in either direction. Pinion 56 meshes with a spur gear 62 i secured on a power takeoff shaft '63 rotatably mountedthrough bracket arms 5I and .through sideplates 21 Vof bracket 26, yabove, base plater 25 thereof. Tal-:eoff shaft 33 is restrained againstr endwise movement by means of' gear'52 and a collar secured upon the other `end of shaft 63, Acooperation with the bracket arm 5I. It will fbeunderstood thatfcver `1 may be provided'with a suitable opening through which the takeoff shaft 63 extends and, if desiredmay also be provided withsuitable known means for effecting an oil tight seal about this shaft. v

The top orcover 2a of the lower housing 2 is bolted to the bodyl thereof Vand 'is Yprovided lwith 'an' interior bearing assembly retaining ring 61, `conveniently formed 'integrally with cover 2a.

The ring 61 receives a'bearing assembly 38 similar Vto,thebearing'assembly H and disposed coaxially with asimilar Vbearingassemblynt mounted in a collar 'i3 formed'` integrally with "and'extending upward from the bottom or lower closure memberr 2h, bolted to the lower end 'of thefjbody of the IB and an interiorV ment mounted on shaft-1E.

shaft 1i andenter the food stuffs or comestibles being lmixed or otherwise treated by the attach- To that end I provide sealing membersr 12 of known type, mounted in an interiorly flanged collar 13 extendingrdownward -from'the bottom or lower closure member .'fb of housing 2, the sealing members providing a substantially oil tight` seal4 about shaft 1 i.y A spur pinion 15 is keyed on shaft 1I and is confined between shoulder'15 thereof andthe inner race or cone of the bearing assembly. 69. Pinion `15 Vmeshes with a pinion 11 secured on countershaft 31by a key 18 and apin 19, or in any other suitable manner. Pinion v11 seats on flange 42a at the upper end of bushing 4Z, thus restraining countershaft 31. against downward movement,

collar 4l restrainingthis shaft against upward movement, whereby countershaft y31V is held against endwise movement in either direction.

Spindle 4 is of greater interio-r diameter, .for U the' major portion of its length, than the oountershaft 31, leavin-g a space 80 about the upper portion of shaft 31, closed at one vend by the sealing imember 48. and at its other end by-shaft 31 and bushingv. Spindle "4 is provided with an inclined duct yill opening into the lower/'end rof space 89, the lower end of this duct `opening into a recess 32 in theunderface offba'se'ilange 3 of spindle4, which recess overlies the upper endA of a duct 83 formed in cover `2a, The lower end of duct 83opens into the upper end ofla duct `34 extending through a rib 85 atene side At its, lower en d` rib 85 is yrecessed for reception of va thimble vBES confined between shoulder 81l of rib 85 and ythe lower closure member 2b. This' vclosure mem# ber 2b isv provided with an inte-gral pump barrel of the body of the lower housing 2.

89,`closed at its outer endrby a screw'plug 9C,

' provided with a radially 'extending outlet opening Si which registers with :a restricted orifice 92, opening through the lower end of spindle t5 and controlled by a ball valve 93 upward movement 4of which is limited by a cross pin g4 at the upper end of thimble B6. A hollow piston 93 is mounted for reciprocation'in pump barrel 82 and is yieldingly held with its inner end in contact with eccentric 44 ofV countershaft 31, by meansv of ,a compressioncoil spring e1 confined between plug l99 and the outer' end 'of piston 9G.' Piston 19t is provided with anrv axial bore y9B extending from itsrinner end forsthe major portion of its length, this bore opening :at its. outer end into abore 99 of increased diameter opening through` ythe outer end of piston Sii. The outerend of bore =98 is controlled by' ajball valvel mi) 'disposed in bore `9,3, outward travel of ball valve'i being limited by a cross pin Il!! secured in piston adjacent the outerend thereof( At itsinnerend piston S is boreddiametrically to` provide, at

Shaft`1lextends downward through the bottom of housing f2 and projects therebelowfor reception of vari- `ousattachments'to be usedin the mixing or` :said lower nousingthrough said; passage ofsaid first shaft and'dis-charging it through s'aidfopening, said lower housing having `anoil ductleadingfrom said seal means'to the intake of said pump means.y 7

3. In a'drivingjunit 1an upper gear housing, ya lower gear housing-,fa

of the character described,

shaft rotatably mounted'in saidupperhousing extending therefrom into said lower housing,

means mounting 'said lower housingV for rotation about the axis of said shaft, a driven shaft mounted in said lower housing extending downward through the bottom thereofand driven-from said `first shaft, oil seal meansl about said driven shaft adjacent the bottomof said lower housing, means for driving said'rst shaft and saidlowerhousing comprising gearing `in said upper housing; the latterand saidv lower housing having` passages 'for flow of oil from said upper housing into said l :lower housing, said firstshaft having an oil passage and an outlet opening therefrom above Said gearing, and anV oil pump driven by said'rst v'shafthaving its discharge connectedto's'aid passage and its intake connected to the interior 0f said lower housing above and adjacent-said oil seal means.` I I 4. In a drivingunit of the character described,

Y an upper gear' housing, a'lower gear housing rotatably supported from saidfupperfhousing, a

` drivenr shaft rotatablymounted in said lower e housing eccentric .to the Vaxis of rotation thereof and extending downward through-the'bottom of i said lower housing, oilseal means about said shaft adjacent the bottom .of said lower housing, an oil pump, and means for? driving said lower housing `and'said shaftand said pump comprising gearing in saidr upper housing, the latter and'said lower ,housing having passages for flow 'of oil from said upper housing into said lower housing, said pump discharginginto said'upper housingfabove said gearing and having its intake connected to said above and adjacentsaid oil'sealv lower housing means. ,Y ,l .y Y l5. In a driving unit' of the character1 described, an upper gear housing, a lower gear housing havvingatub'ular spindle secured thereto extending into and mounted for rotation-in saidupper housing, a shaft rotatably mounted e thro-ugh *said spindle spaced therefrom, providing aispaceabout said shaft closed substantially oil. tight vat its ends, saidY lower housing having an, oilsump in its lower portion, a pump having its intakeconnected to said'sump, a driven shaft rotatably mounted in said lower housing'eccentric to said spindle and extending 'through the bottom of said lower housing, oil seal means about said driven shaft adjacent the bottom of said lower'housing, and means for rotatingsaid rst shaft and said spindle and for driving said drivenV shaft and said kpump comprising gearing in said upper housing,

said` lower housing and said spindle having 'an oil passage leading from the dis-charge of said pump to the spacebetween said spindle and said first shaft andthe latter having a. passage opening at one end into said space and at its other end into l said-upper housing above said gearing, said upperk v and lower housings having passages for flow of oil from said upper housing into said lower housing andthe latter housing'having an oil duct opening 1 into said sump fromfabove and adjacent said oil seal means.- Y l 6. In a driving'unit of the character described,

anupper gear housing, a lower gear housing hav-rv ing a spindle secured thereto extending into said uppernho'using, vbearing assembliesV open for oil flow therethrough rotatably mounting said spindle in said upper housing, a drive shaft-rotatably mounted in said upper housing, a countershaft rotatably mounted through said spindle spaced'` therefrom providing` a Tspace` about lsaidcountershaft closed at Vits ends, driving connections between saidshafts comprisinggearing Vabove said rspindle, vgearing establishing drivingconnection between said, drive shaft andfsaid'espindlefa' drivenshaft in said'lower housingleccentric to said'spindle extending through the bottom of said f lower housing, upper andlowerbearing assemblies open lfor oil flow therethrough vrotatably mounting said driven shaft, oil seal means 'about said driven shaft adjacent andbelow thek lower bearing assembly` thereof, driving" connections rbetween said countershaft and said driven shaft,

said countershaft having a passage opening at o-ne end into said space andat its other end into lsaid upper housing above said firstA gearing, said housings having 'passages Yfofrrflow ofr oil from said upper housing intosaid lower housing with one thereof overlying said driven shaft, and 'an oil pumpdriven by said countershaftV having its intake connected to said lower housing above and adjacent said oil seal means and its exhaust connected to said space.

7'. In a driving unit of thecharacterdescribed,' e

an upper gear housing, a lower gear housing having a spindle'secured thereto extending into said upper housingfbearing assemblies Yopen for oil flow therethrough rotatably` mounting said spin dle in saidupper housing, a, drive shaft rotatably mounted in said upperhousing, saidvflower housing having an oil sump at its bottom,V a vcountershaft mounted through said spindle spaced therefrom providing a space about said countershaft closed at itsfends, said (munter/shaftextending into said lower housing and having at A:its lowerV end an eccentric disposed in said sump, driving connections between said'drive shaft` and said countershaft andv Yspindle comprising gearing above said spindle, a driven shaft in said lower housing eccentricato said countershaft extending through the bottom of said lowerhousing, upper and lower bearing assemblies'openfonoilV ovv therethrough lrotatably Amounting Said,v driven shaft, oilfseal means aboutfsaid drivenA shaft adjacent ,and belovvfthe lower bearing `Vassembly thereof, .driving gearingbetiveen said couhteri' shaft and said'driven shaft, said countershaft having a passage Vopening-into said space'andv into said upper housing above said rst. gearing and said housings having passages Afor flow of oil from said upper housing' into Vsaidlower housing with one thereof Voverlying saiddriven shaft,

and a pump. drivenby said eccentric havingitsf l jacent the bottom'of said lower housing, said w `housings having passages for flow Vof oil from said upper housing into said lower housing, an oil pump withdrawing oil from said lower housing at a pointadjacent said oil seal meansand disfchargingxit into said upper' housing, and means lfor driving said lowery housing and saiddrive'n shaft and pump.y Y f Y 41 "driven shaftV mounted `in said "lower` housing( efccentric to theaxis-Of `rotationl theeof andlj ex- `temtlingthroughthe; bottom of,sa.id lower housing, oil seal means abutsaidldrivenfshaft adja,;

cent the bottom of said lower housing,` `seidl house` anfupper gearv housing', a lowergear housiugrl'otaisably` supported fromlsafdrnpper housing'ggg. y

upperhousing intoV saicl` lower housing,` `:am oil 1 pump'withdrawing oil from said lower; housing utf Y?.

.- a. point 'alooveerld` adjocents'aidoil seal means`I aud discharging "it into said upper housing,\andif Vmeansfor 'drivingsaidlower housing andsaid ingyhaving` passages. for` flow of oil fro'msaid: y

driven shaft andpumpg' f j- EDWARDmKARP. 

